Dual-function polarizer based on hybrid metasurfaces of vanadium dioxide and Dirac semimetals

被引：23

作者：

Zhang, Yuping ^{[1
]}

Tian, Yuanshi ^{[1
]}

Zhang, Yanliang ^{[1
]}

Dai, Linlin ^{[1
]}

Liu, Shande ^{[1
]}

Zhang, Yong ^{[2
]}

Zhang, Huiyun ^{[1
,3
]}

机构：

[1] Shandong Univ Sci & Technol, Coll Elect & Informat Engn, Qingdao 266510, Peoples R China

[2] Hebei Univ Technol, Sch Sci, Beichen Campus, Tianjin 300401, Peoples R China

[3] Shandong Normal Univ, Collaborat Innovat Ctr Light Manipulat & Applicat, Jinan 250358, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2020年 / 477卷

基金：

中国国家自然科学基金;

关键词：

Vanadium dioxide; Dirac semimetal; Polarization conversion; Dynamically tunable; Dual-excitation control; ELECTROMAGNETICALLY INDUCED TRANSPARENCY; SURFACE-PLASMON RESONANCE; ASYMMETRIC TRANSMISSION; METAMATERIAL; CONVERSION; TUNABILITY; CONVERTER; ABSORBER;

D O I：

10.1016/j.optcom.2020.126348

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

This paper proposes a dual-function polarizer based on hybrid metasurfaces of vanadium dioxide (VO2) and Dirac semimetals (DSs). VO2's insulator-to-metal phase transition capability is utilized to switch between transmission and reflection polarization conversion without reoptimizing the structure. When VO2 is used as a dielectric, the polarization converter operates in transmission mode, achieving a polarization conversion ratio (PCR) of over 90% at 4.29-6.39 THz. For VO2 in the metallic phase, it achieves reflection-type polarization conversion within a 1.32 THz frequency width, with PCR close to 100% It is also capable of dual-excitation control via adjustment of the Fermi level of DSs and conductivity of VO2 .

引用

页数：9

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